Table 3.

Interaction between LS and depressed mood on the prevalence of sleep problems (multiple imputation, N=3880)

	Life satisfaction
	very satisfied	not very satisfied
	POR (95% CI)	POR (95% CI)
Non-depressed mood (cut-off <16)	1.0	1.5 (1.3 to 1.8)
Depressed mood (cut-off ≥16)	3.4 (1.5 to 7.9)	7.4 (3.5 to 11.3)

Measure of interaction on additive scale: RERI (95% CI)=3.7 (−0.2 to 7.1).

PORs are adjusted for age, sex, socioeconomic status, smoking, BMI, alcohol consumption, cholesterol, social support, life events and physical activity.

BMI, body mass index; POR, prevalence OR; RERI, Relative excess risk for interaction.